两种接口传送数据协议(xml和json)

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https://blog.csdn.net/tianyazaiheruan/article/details/37659983

   规范性接口开发中。一般数据是以json或者xml的格式传送的。而不是字符串的形式直接返回给接口调用者；以下介绍这两种格式的编写方法。

   以下两种数据传送方式是接口输出端的编写。需引入的包例如以下：

<span style="font-family:KaiTi_GB2312;font-size:18px;">importjava.io.PrintWriter;
importjava.io.StringWriter;
importjavax.servlet.http.HttpServletResponse;
importorg.dom4j.Document;
import org.dom4j.io.OutputFormat;
import org.dom4j.io.XMLWriter;</span>

1.传送 XML 协议的格式数据

<span style="font-family:KaiTi_GB2312;font-size:18px;">   /**
    * xml 格式数据
    *
    * @param response
    * @param doc
    */
    publicstaticvoidoutDocToXML(HttpServletResponse response, Document doc) {
       // 以下代码请注意编码顺序
       response.setCharacterEncoding("utf-8");
       response.setContentType("text/xml;charset=utf-8");
       response.setHeader("Pragma", "no-cache");
       response.setHeader("Cache-Control", "no-cache");
       response.setDateHeader("Expires", 0);
       PrintWriter out = null;
       StringWriter writer = new StringWriter();
       OutputFormat format = OutputFormat.createPrettyPrint(); //
       format.setEncoding("UTF-8");
       XMLWriter xmlwriter = new XMLWriter(writer,format);
       try {
            out = response.getWriter();
           xmlwriter.write(doc);
       } catch (Exception e) {
           e.printStackTrace();
       }
       out.print(writer.toString());
       out.close();
}</span>

 

2.传送 json 协议的格式数据

<span style="font-family:KaiTi_GB2312;font-size:18px;">/**
    * json 数据格式
    *
    * @param response
    * @param data
    * @param type
    */
    protectedvoidsendData(HttpServletResponse response, Object data) {
       if (data != null) {
           response.setCharacterEncoding("utf-8");
           response.setContentType("application/json;charset=UTF-8");
           response.setHeader("Pragma", "no-cache");
           response.setHeader("Cache-Control", "no-cache");
           response.setDateHeader("Expires", 0);
           PrintWriter out = null;
           try {
                out = response.getWriter();
                out.print(data);
                out.close();
           } catch (Exception e) {
                e.printStackTrace();
           }
       }
    }</span>

转正请指明出处：blog.csdn.net/yangkai_hudong